Fix import/export annotations for v8 targets that are always static

test/unittests/unittests.gyp

 # Copyright 2014 the V8 project authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 # The sources are kept automatically in sync with BUILD.gn.
 
 {
   'variables': {
     'v8_code': 1,
     'unittests_sources': [  ### gcmole(all) ###
@@ skipping 212 matching lines @@
             '<@(unittests_sources_s390)',
           ],
         }],
         ['OS=="aix"', {
           'ldflags': [ '-Wl,-bbigtoc' ],
         }],
         ['component=="shared_library"', {
           # compiler-unittests can't be built against a shared library, so we
           # need to depend on the underlying static target in that case.
           'dependencies': ['../../src/v8.gyp:v8_maybe_snapshot'],
+          'defines': [ 'BUILDING_V8_SHARED', ]
         }, {
           'dependencies': ['../../src/v8.gyp:v8'],
         }],
         ['os_posix == 1', {
           # TODO(svenpanne): This is a temporary work-around to fix the warnings
           # that show up because we use -std=gnu++0x instead of -std=c++11.
           'cflags!': [
             '-pedantic',
           ],
           'direct_dependent_settings': {
@@ skipping 18 matching lines @@
             '../../gypfiles/isolate.gypi',
           ],
           'sources': [
             'unittests.isolate',
           ],
         },
       ],
     }],
   ],
 }